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* grub-core/disk/efi/efidisk.c (grub_efidisk_get_device_name): Handle 

CD-ROM in case when it's declared as having subpartitions.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2013-10-19 02:23:08 +02:00
parent 29013cba15
commit 0f7c00c1c6
2 changed files with 75 additions and 65 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2013-10-18 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/disk/efi/efidisk.c (grub_efidisk_get_device_name): Handle
CD-ROM in case when it's declared as having subpartitions.
2013-10-18 Vladimir Serbinenko <phcoder@gmail.com>
Don't add -lm on haiku.

135
grub-core/disk/efi/efidisk.c
View File

@ -799,77 +799,82 @@ grub_efidisk_get_device_name (grub_efi_handle_t *handle)
if (! ldp)
return 0;
if (GRUB_EFI_DEVICE_PATH_TYPE (ldp) == GRUB_EFI_MEDIA_DEVICE_PATH_TYPE)
if (GRUB_EFI_DEVICE_PATH_TYPE (ldp) == GRUB_EFI_MEDIA_DEVICE_PATH_TYPE
&& (GRUB_EFI_DEVICE_PATH_SUBTYPE (ldp) == GRUB_EFI_CDROM_DEVICE_PATH_SUBTYPE
|| GRUB_EFI_DEVICE_PATH_SUBTYPE (ldp) == GRUB_EFI_HARD_DRIVE_DEVICE_PATH_SUBTYPE))
{
int is_cdrom = 0;
switch (GRUB_EFI_DEVICE_PATH_SUBTYPE (ldp))
{
case GRUB_EFI_CDROM_DEVICE_PATH_SUBTYPE:
is_cdrom = 1;
/* Intentionally fall through */
case GRUB_EFI_HARD_DRIVE_DEVICE_PATH_SUBTYPE:
{
struct grub_efidisk_get_device_name_ctx ctx;
char *dev_name;
grub_efi_device_path_t *dup_dp, *dup_ldp;
grub_disk_t parent = 0;
struct grub_efidisk_get_device_name_ctx ctx;
char *dev_name;
grub_efi_device_path_t *dup_dp;
grub_disk_t parent = 0;
/* It is necessary to duplicate the device path so that GRUB
can overwrite it. */
dup_dp = duplicate_device_path (dp);
if (! dup_dp)
/* It is necessary to duplicate the device path so that GRUB
can overwrite it. */
dup_dp = duplicate_device_path (dp);
if (! dup_dp)
return 0;
while (1)
{
grub_efi_device_path_t *dup_ldp;
dup_ldp = find_last_device_path (dup_dp);
if (!(GRUB_EFI_DEVICE_PATH_TYPE (dup_ldp) == GRUB_EFI_MEDIA_DEVICE_PATH_TYPE
&& (GRUB_EFI_DEVICE_PATH_SUBTYPE (dup_ldp) == GRUB_EFI_CDROM_DEVICE_PATH_SUBTYPE
|| GRUB_EFI_DEVICE_PATH_SUBTYPE (dup_ldp) == GRUB_EFI_HARD_DRIVE_DEVICE_PATH_SUBTYPE)))
break;
if (GRUB_EFI_DEVICE_PATH_SUBTYPE (dup_ldp) == GRUB_EFI_CDROM_DEVICE_PATH_SUBTYPE)
is_cdrom = 1;
dup_ldp->type = GRUB_EFI_END_DEVICE_PATH_TYPE;
dup_ldp->subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE;
dup_ldp->length[0] = sizeof (*dup_ldp);
dup_ldp->length[1] = 0;
}
if (!get_diskname_from_path (dup_dp, device_name))
{
grub_free (dup_dp);
return 0;
}
parent = grub_disk_open (device_name);
grub_free (dup_dp);
if (! parent)
return 0;
/* Find a partition which matches the hard drive device path. */
ctx.partition_name = NULL;
grub_memcpy (&ctx.hd, ldp, sizeof (ctx.hd));
if (ctx.hd.partition_start == 0
&& (ctx.hd.partition_size << (parent->log_sector_size
- GRUB_DISK_SECTOR_BITS))
== grub_disk_get_size (parent))
{
dev_name = grub_strdup (parent->name);
}
else
{
grub_partition_iterate (parent, grub_efidisk_get_device_name_iter,
&ctx);
if (! ctx.partition_name)
{
grub_disk_close (parent);
if (is_cdrom)
return grub_strdup (device_name);
return 0;
}
dup_ldp = find_last_device_path (dup_dp);
dup_ldp->type = GRUB_EFI_END_DEVICE_PATH_TYPE;
dup_ldp->subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE;
dup_ldp->length[0] = sizeof (*dup_ldp);
dup_ldp->length[1] = 0;
dev_name = grub_xasprintf ("%s,%s", parent->name,
ctx.partition_name);
grub_free (ctx.partition_name);
}
grub_disk_close (parent);
if (!get_diskname_from_path (dup_dp, device_name))
{
grub_free (dup_dp);
return 0;
}
parent = grub_disk_open (device_name);
grub_free (dup_dp);
if (! parent)
return 0;
/* Find a partition which matches the hard drive device path. */
ctx.partition_name = NULL;
grub_memcpy (&ctx.hd, ldp, sizeof (ctx.hd));
if (ctx.hd.partition_start == 0
&& (ctx.hd.partition_size << (parent->log_sector_size
- GRUB_DISK_SECTOR_BITS))
== grub_disk_get_size (parent))
{
dev_name = grub_strdup (parent->name);
}
else
{
grub_partition_iterate (parent, grub_efidisk_get_device_name_iter,
&ctx);
if (! ctx.partition_name)
{
grub_disk_close (parent);
if (is_cdrom)
return grub_strdup (device_name);
return 0;
}
dev_name = grub_xasprintf ("%s,%s", parent->name,
ctx.partition_name);
grub_free (ctx.partition_name);
}
grub_disk_close (parent);
return dev_name;
}
}
return dev_name;
}
/* This may be guessed device - floppy, cdrom or entire disk. */
if (!get_diskname_from_path (dp, device_name))